Empire City, Ma. - former home of the Golden Age
Manhunter (Paul Kirk)

Fairfax, Me. - former home of Chris King and Vicki
Grant (Dial-H for Hero)

Gotham City, NJ - home of the Batman, also includes
nearby city of Blüdhaven (former home to Nightwing, now home to Robin and Batgirl)

Happy Harbor, RI - location of the Secret Sanctuary
(the original headquarters of the Justice League and current home to Young
Justice), it is also the hometown of Snapper Carr and the base of
operations for the current Hourman

Ivy Town, Ct. - home of the Atom (Ray Palmer), who
teaches at Ivy University

Metropolis, De. - home of Superman

New Carthage, NY - location of Hudson University, where
Dick Grayson (Robin I/Nightwing) attended university and the hometown of
Amy Winston (Princess Amethyst)

Opal City, MD - former home of Starman (Jack Knight), now home to Elongated Man